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Displaying 1726 - 1750 of 143727

Elastic Behavior of Orientation-Correlated Grains in Multiphase Aggregates

December 1, 2023
Author(s)
Thomas Gnaupel-Herold
Diffraction elastic constants (DECs) describe the elastic response of a subset of orientation-correlated grains which share a common lattice vector. DECs reflect the elastic behaviour of the single-crystal constituents through their dependence on grain

Extending Explainable Boosting Machines to Scientific Image Data

November 30, 2023
Author(s)
Daniel Schug, Sai Yerramreddy, Rich Caruana, Craig Greenberg, Justyna Zwolak
As the deployment of computer vision technology becomes increasingly common in science, the need for explanations of the system and its output has become a focus of great concern. Driven by the pressing need for interpretable models in science, we propose

Optomechanical feedback cooling of a 5 mm long torsional mode

November 30, 2023
Author(s)
Dianqiang Su, Yuan Jiang, Pablo Solano, Luis Orozco, John R. Lawall, Yanting Zhao
We report three orders of magnitude optical cooling of the fundamental torsional mode of a 5 mm-long, 550 nm diameter optical nanofiber. The rotation of the nanofiber couples to the polarization of guided laser fields. We use a weak laser probe to monitor

2024 Laws Interim Analysis

November 29, 2023
Author(s)
Lisa Warfield, John McGuire
The NIST OWM Analysis is submitted to assist the Weights and Measures community as it deliberates on items before the Conference. NIST OWM offers these comments and recommendations based on information and input available as of the date of this report

Microplastics absent from reef fish in the Marshall Islands: Multistage screening methods reduced false positives

November 29, 2023
Author(s)
Katherine Shaw, Jonathan Whitney, Eileen Nalley, Madeline Schmidbauer, Megan Donahue, Jesse Black, Raquel Corniuk, Kellie Teague, Catherine Pirkle, Rachel Dacks, Max Sudnovsky, Jennifer Lynch
Island communities, like the Republic of the Marshall Islands (RMI), depend on marine resources for food and economics, so plastic ingestion by those resources is a concern. The gastrointestinal tracts of nine species of reef fish across five trophic

Powder Spreading Testbed for Studying the Powder Spreading Process in Powder Bed Fusion Machines

November 29, 2023
Author(s)
Justin Whiting, Eric Whitenton, Aniruddha Das, Vipin Tondare, Jason Fox, Michael McGlauflin, Alkan Donmez, Shawn P. Moylan
The spreading of powder is an integral part of powder bed fusion-based additive manufacturing technologies; however, due to the complex nature and the number of interactions between particles, studying the powder spreading process is difficult. In order to

Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr II

November 28, 2023
Author(s)
Jacob Ward, Jacqueline Li, Jared Schwartz, Gillian Nave, Ton Raassen, Peter H. M. Uylings
We present transition probabilities for 268 spectral lines of singly-ionized chromium (Cr II) in the wavelength region 208 nm to 414 nm. Branching fractions were measured in archival Fourier transform spectra of chromium-argon and chromium-neon hollow

Ambient humidity, the overlooked influencer of radioactivity measurements

November 27, 2023
Author(s)
Stefaan Pomme, Michael P. Unterweger, Ryan P. Fitzgerald, Denis E. Bergeron, Leticia Pibida, International Collaboration
When verifying the validity of the exponential-decay law through 128 precise decay rate measurement series at various nuclear laboratories, minor violations have been observed in the shape of annual cycles in the residuals with different amplitudes and

An Improved Sample Preparation Method for Protein and Peptide Identification from Human Hair

November 27, 2023
Author(s)
Zheng Zhang, William E. Wallace, Guanghui Wang, Meghan Burke Harris, Yi Liu, Sergey Sheetlin, Stephen E. Stein
A fast and sensitive Direct Extraction (DE) method developed in our group can efficiently extract proteins in 30 min from a 5 cm-long hair strand. Previously we coupled DE to downstream analysis using gel electrophoresis followed by in-gel digestion, which

Layered Security Guidance for Data Asset Management in Additive Manufacturing

November 23, 2023
Author(s)
Fahad Milaat, Joshua Lubell
Manufacturing industries are increasingly adopting additive manufacturing (AM) technologies to produce functional parts in critical systems. However, the inherent complexity of both AM designs and AM processes render them attractive targets for cyber

Optical n(p, T_90) measurement suite 1: He, Ar, and N_2

November 23, 2023
Author(s)
Patrick Egan, Yuanchao Yang
An n(p, T90) measurement suite is reported for the gases helium, argon, and nitrogen. The methodology is optical refractive-index gas metrology, operating at laser wavelength 633 nm and covering the temperature range (293 T 433) K and pressures p 0.5
Displaying 1726 - 1750 of 143727
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